diff --git a/assets/js/token-expiry.js b/assets/js/token-expiry.js
new file mode 100644
index 0000000..24e00cd
--- /dev/null
+++ b/assets/js/token-expiry.js
@@ -0,0 +1,78 @@
+(function ($) {
+    function hasDateValue(expiresGroup) {
+        var textInput = expiresGroup.querySelector('input[type="text"]');
+        if (textInput) {
+            var value = String(textInput.value || '').trim();
+            return value !== '' && value !== '0000-00-00 00:00:00';
+        }
+
+        var year = expiresGroup.querySelector('select[name*="[year]"]');
+        var month = expiresGroup.querySelector('select[name*="[month]"]');
+        var day = expiresGroup.querySelector('select[name*="[day]"]');
+
+        if (!year || !month || !day) {
+            return false;
+        }
+
+        return parseInt(year.value, 10) > 0 && parseInt(month.value, 10) > 0 && parseInt(day.value, 10) > 0;
+    }
+
+    function setGroupEnabled(expiresGroup, enabled) {
+        var fields = expiresGroup.querySelectorAll('input, select, textarea, button');
+        fields.forEach(function (field) {
+            field.disabled = !enabled;
+        });
+        expiresGroup.classList.toggle('text-muted', !enabled);
+    }
+
+    function init() {
+        var checkboxGroup = document.getElementById('yform-api-token-form-expires_active');
+        var expiresGroup = document.getElementById('yform-api-token-form-expires_at');
+        if (!checkboxGroup || !expiresGroup) {
+            return;
+        }
+
+        var checkbox = checkboxGroup.querySelector('input[type="checkbox"]');
+        if (!checkbox) {
+            return;
+        }
+
+        function applyVisibility(isActive) {
+            expiresGroup.style.display = isActive ? '' : 'none';
+            setGroupEnabled(expiresGroup, isActive);
+        }
+
+        var isFirstInit = checkbox.dataset.apiExpiryInit !== '1';
+        checkbox.dataset.apiExpiryInit = '1';
+
+        if (isFirstInit) {
+            checkbox.checked = hasDateValue(expiresGroup);
+        }
+
+        applyVisibility(checkbox.checked);
+
+        if (checkbox._apiExpiryHandler) {
+            checkbox.removeEventListener('change', checkbox._apiExpiryHandler);
+            checkbox.removeEventListener('click', checkbox._apiExpiryHandler);
+            checkboxGroup.removeEventListener('change', checkbox._apiExpiryHandler);
+            checkboxGroup.removeEventListener('click', checkbox._apiExpiryHandler);
+        }
+
+        checkbox._apiExpiryHandler = function () {
+            applyVisibility(checkbox.checked);
+        };
+
+        checkbox.addEventListener('change', checkbox._apiExpiryHandler);
+        checkbox.addEventListener('click', checkbox._apiExpiryHandler);
+        checkboxGroup.addEventListener('change', checkbox._apiExpiryHandler);
+        checkboxGroup.addEventListener('click', checkbox._apiExpiryHandler);
+    }
+
+    $(function () {
+        init();
+    });
+
+    $(document).on('rex:ready', function () {
+        init();
+    });
+})(jQuery);
diff --git a/boot.php b/boot.php
index 422d720..65f5e7d 100644
--- a/boot.php
+++ b/boot.php
@@ -42,4 +42,9 @@
         rex_view::addCssFile($addon->getAssetsUrl('css/swagger-ui-redaxo-theme.css'));
         rex_view::addJsFile($addon->getAssetsUrl('vendor/swagger-ui/js/swagger-ui-bundle.js'));
     }
+
+    if (rex::isBackend() && 'api/token' === rex_be_controller::getCurrentPage()) {
+        $addon = rex_addon::get('api');
+        rex_view::addJsFile($addon->getAssetsUrl('js/token-expiry.js'));
+    }
 }
\ No newline at end of file
diff --git a/install.php b/install.php
index 1f10fa1..5558685 100644
--- a/install.php
+++ b/install.php
@@ -6,4 +6,10 @@
 ->ensureColumn(new rex_sql_column('token', 'varchar(191)'))
 ->ensureColumn(new rex_sql_column('status', 'tinyint(1)', false, '1'))
 ->ensureColumn(new rex_sql_column('scopes', 'text'))
+->ensureColumn(new rex_sql_column('expires_at', 'datetime', true))
 ->ensure();
+
+rex_sql::factory()->setQuery(
+    'UPDATE ' . rex::getTable('api_token') . ' SET expires_at = NULL WHERE expires_at = ? OR expires_at = ?',
+    ['0000-00-00 00:00:00', ''],
+);
diff --git a/lang/de_de.lang b/lang/de_de.lang
index 277f47e..68623ef 100644
--- a/lang/de_de.lang
+++ b/lang/de_de.lang
@@ -17,9 +17,13 @@ api_token_name = Name/Beschreibung
 api_token_token = Token
 api_token_not_found = Keine Tokens bisher vorhanden
 api_token_status = aktiv
+api_active = aktiv
+api_inactive = inaktiv
 api_token_create = API-Token erstellen
 api_token_token_notice = Wie wäre es mit diesem Token {0}
 api_token_token_scopes = Scopes
+api_token_expire_active = Ablauf aktiv
+api_token_expires_at = Ablaufdatum
 api_token_update = API-Token bearbeiten
 api_token_updated = API-Token Eintrag wurde aktualisiert
 api_openapi = OpenAPI
diff --git a/lib/Token.php b/lib/Token.php
index 0eba37a..7119321 100644
--- a/lib/Token.php
+++ b/lib/Token.php
@@ -15,7 +15,11 @@ class Token
     private ?int $id = null;
     private string $name = '';
     private string $token = '';
+    private ?string $expiresAt = null;
 
+    /**
+     * @param array<string, mixed> $data
+     */
     public function __construct(array $data)
     {
         $this->id = (int) $data['id'];
@@ -23,8 +27,15 @@ public function __construct(array $data)
         $this->status = (1 == $data['status']) ? true : false;
         $this->scopes = $data['scopes'];
         $this->token = $data['token'];
+        $expiresAt = (string) ($data['expires_at'] ?? '');
+        if ('' !== $expiresAt && '0000-00-00 00:00:00' !== $expiresAt) {
+            $this->expiresAt = $expiresAt;
+        }
     }
 
+    /**
+     * @return list<string>
+     */
     public function getScopes(): array
     {
         return ('' === $this->scopes) ? [] : explode(',', $this->scopes);
@@ -47,21 +58,38 @@ public function getToken(): string
 
     public function isActive(): bool
     {
-        return $this->status;
+        return $this->status && !$this->isExpired();
+    }
+
+    public function getExpiresAt(): ?string
+    {
+        return $this->expiresAt;
+    }
+
+    public function isExpired(): bool
+    {
+        if (null === $this->expiresAt) {
+            return false;
+        }
+
+        return strtotime($this->expiresAt) <= time();
     }
 
-    public static function get(int $Id)
+    public static function get(int $Id): ?self
     {
-        $Token = rex_sql::factory()->getArray('select * from ' . rex::getTable('api_token') . ' where id = ? and status = ?,', [$Id, 1]);
+        $Token = rex_sql::factory()->getArray('select * from ' . rex::getTable('api_token') . ' where id = ? and status = ?', [$Id, 1]);
         if (0 == count($Token)) {
             return null;
         }
         return new self($Token[0]);
     }
 
-    public static function getByToken(string $Token)
+    public static function getByToken(string $Token): ?self
     {
-        $Token = rex_sql::factory()->getArray('select * from ' . rex::getTable('api_token') . ' where token = ? and status = ?', [$Token, 1]);
+        $Token = rex_sql::factory()->getArray(
+            'select * from ' . rex::getTable('api_token') . ' where token = ? and status = ? and (expires_at is null or expires_at = ? or expires_at = ? or expires_at > now())',
+            [$Token, 1, '', '0000-00-00 00:00:00'],
+        );
         if (0 == count($Token)) {
             return null;
         }
@@ -80,6 +108,9 @@ public static function getFromBearerToken(): ?self
         return self::getByToken($BearerToken);
     }
 
+    /**
+     * @return list<string>
+     */
     public static function getAvailableScopes(): array
     {
         $Scopes = [];
diff --git a/pages/token.php b/pages/token.php
index f81f2c4..e05fb8f 100644
--- a/pages/token.php
+++ b/pages/token.php
@@ -14,6 +14,27 @@
 $content = '';
 $show_list = true;
 
+$normalizeExpiresAt = static function (int $tokenId, bool $forceNull = false) use ($table): void {
+    if ($tokenId < 1) {
+        return;
+    }
+
+    $sql = rex_sql::factory();
+    if ($forceNull) {
+        $sql->setQuery('UPDATE ' . $table . ' SET expires_at = NULL WHERE id = :id', ['id' => $tokenId]);
+        return;
+    }
+
+    $sql->setQuery(
+        'UPDATE ' . $table . ' SET expires_at = NULL WHERE id = :id AND (expires_at = :zeroDate OR expires_at = :emptyValue)',
+        [
+            'id' => $tokenId,
+            'zeroDate' => '0000-00-00 00:00:00',
+            'emptyValue' => '',
+        ],
+    );
+};
+
 if ('delete' == $func && !rex_csrf_token::factory($_csrf_key)->isValid()) {
     echo rex_view::error(rex_i18n::msg('csrf_token_invalid'));
 } elseif ('delete' == $func) {
@@ -26,6 +47,8 @@
     $form_data[] = 'text|name|translate:api_token_name';
     $form_data[] = 'validate|empty|name|translate:api_token_name_validate';
     $form_data[] = 'text|token|translate:api_token_token|#notice:' . rex_i18n::msg('api_token_token_notice', bin2hex(random_bytes((32 - (32 % 2)) / 2)));
+    $form_data[] = 'checkbox|expires_active|translate:api_token_expire_active|0|no_db';
+    $form_data[] = 'datetime|expires_at|translate:api_token_expires_at|||Y-m-d H:i:s|1';
     $form_data[] = 'validate|empty|token|translate:api_token_token_validate';
     $form_data[] = 'choice|scopes|translate:api_token_token_scopes|' . implode(',', Token::getAvailableScopes()) . '||1';
 
@@ -36,6 +59,7 @@
     $yform->setFormData(implode("\n", $form_data));
     $yform->setObjectparams('form_showformafterupdate', 1);
 
+    /** @var rex_yform $yform_clone */
     $yform_clone = clone $yform;
 
     if ('edit' == $func) {
@@ -71,6 +95,31 @@
     $content = $yform->executeActions();
 
     if ($yform->objparams['actions_executed']) {
+        $tokenId = (int) ($yform->objparams['main_id'] ?? 0);
+        if ($tokenId > 0) {
+            $isExpiresActive = false;
+            $expiresAtValue = '';
+
+            foreach ($yform->objparams['values'] as $fieldValue) {
+                if (!is_object($fieldValue) || !method_exists($fieldValue, 'getName') || !method_exists($fieldValue, 'getValue')) {
+                    continue;
+                }
+
+                $fieldName = (string) $fieldValue->getName();
+                if ('expires_active' === $fieldName) {
+                    $isExpiresActive = '1' === (string) $fieldValue->getValue();
+                } elseif ('expires_at' === $fieldName) {
+                    $expiresAtValue = trim((string) $fieldValue->getValue());
+                }
+            }
+
+            if (!$isExpiresActive) {
+                $normalizeExpiresAt($tokenId, true);
+            } else {
+                $normalizeExpiresAt($tokenId, false);
+            }
+        }
+
         switch ($func) {
             case 'edit':
                 if (2 == $submit_type) {
@@ -92,6 +141,7 @@
                     $data_id = $yform->objparams['main_id'];
                     $func = 'edit';
 
+                    /** @var rex_yform $yform */
                     $yform = $yform_clone;
                     $yform->setHiddenField('func', $func);
                     $yform->setHiddenField('data_id', $data_id);
@@ -147,7 +197,16 @@
     $list->removeColumn('token');
 
     $list->setColumnFormat('status', 'custom', static function ($params) {
-        return (1 == $params['subject']) ? rex_i18n::msg('active') : rex_i18n::msg('inactive');
+        return (1 == $params['subject']) ? rex_i18n::msg('api_active') : rex_i18n::msg('api_inactive');
+    });
+
+    $list->setColumnFormat('expires_at', 'custom', static function ($params) {
+        $expiresAt = (string) $params['subject'];
+        if ('' === $expiresAt || '0000-00-00 00:00:00' === $expiresAt) {
+            return '-';
+        }
+
+        return $expiresAt;
     });
 
     $list->setColumnLabel('name', rex_i18n::msg('api_token_name'));
diff --git a/tests/.env.example b/tests/.env.example
index fc05f43..89b029a 100644
--- a/tests/.env.example
+++ b/tests/.env.example
@@ -11,6 +11,10 @@ API_TEST_DEBUG=1
 # grant it ALL scopes the test suite hits.
 API_TEST_TOKEN=
 
+# Optional: abgelaufener Token für Expiry-Regressionstest in AuthApiTest.
+# Leave empty to skip this test.
+API_TEST_EXPIRED_TOKEN=
+
 # Optional: a second token with a *limited* set of scopes — used by AuthApiTest
 # to verify scope enforcement. Must have the scopes listed under
 # API_TEST_RESTRICTED_TOKEN_ALLOWED_SCOPES below, and explicitly NOT have the
diff --git a/tests/AuthApiTest.php b/tests/AuthApiTest.php
index d45f206..44ef315 100644
--- a/tests/AuthApiTest.php
+++ b/tests/AuthApiTest.php
@@ -61,6 +61,18 @@ public function testWrongBearerToken(): void
         $this->assertSame(401, $response['status']);
     }
 
+    public function testExpiredTokenReturns401(): void
+    {
+        $expiredToken = (string) (self::$config['expired_token'] ?? '');
+        if ('' === $expiredToken) {
+            self::markTestSkipped('Kein Expired-Token in tests/.env (API_TEST_EXPIRED_TOKEN).');
+        }
+
+        $response = $this->doRequest(['Authorization: Bearer ' . $expiredToken]);
+        $this->assertSame(401, $response['status']);
+        $this->assertSame('Authorization failed', $response['data']['error'] ?? null);
+    }
+
     public function testMalformedAuthorizationHeader(): void
     {
         // Kein "Bearer "-Prefix — Token::getFromBearerToken() kann nichts extrahieren.
diff --git a/tests/config.php b/tests/config.php
index 058b9b8..5afc823 100644
--- a/tests/config.php
+++ b/tests/config.php
@@ -32,6 +32,7 @@
     'base_url' => $env('API_TEST_BASE_URL', 'https://redaxo.localhost'),
     'api_prefix' => $env('API_TEST_API_PREFIX', '/api'),
     'api_token' => $env('API_TEST_TOKEN'),
+    'expired_token' => $env('API_TEST_EXPIRED_TOKEN'),
     'restricted_token' => $env('API_TEST_RESTRICTED_TOKEN'),
     'restricted_token_allowed_path' => $env('API_TEST_RESTRICTED_TOKEN_ALLOWED_PATH', 'structure/articles'),
     'restricted_token_denied_path' => $env('API_TEST_RESTRICTED_TOKEN_DENIED_PATH', 'users'),