https://github.com/magento/magento2/issues/24716

Not Able to set Rest API oAuth admin token expire in minutes or seconds. #24716

Author: ivanko-dev

app/code/Magento/Integration/Helper/Oauth/Data.php

@@ -116,22 +116,22 @@ public function getConsumerPostTimeout()
     /**
      * Get customer token lifetime from config.
      *
-     * @return int hours
+     * @return string hours
      */
     public function getCustomerTokenLifetime()
     {
-        $hours = (int)$this->_scopeConfig->getValue('oauth/access_token_lifetime/customer');
-        return $hours > 0 ? $hours : 0;
+        $hours = $this->_scopeConfig->getValue('oauth/access_token_lifetime/customer');
+        return is_numeric($hours) ? $hours : 0;
     }
 
     /**
      * Get customer token lifetime from config.
      *
-     * @return int hours
+     * @return string hours
      */
     public function getAdminTokenLifetime()
     {
-        $hours = (int)$this->_scopeConfig->getValue('oauth/access_token_lifetime/admin');
-        return $hours > 0 ? $hours : 0;
+        $hours = $this->_scopeConfig->getValue('oauth/access_token_lifetime/admin');
+        return is_numeric($hours) ? $hours : 0;
     }
 }

app/code/Magento/Webapi/Model/Authorization/TokenUserContext.php

@@ -137,7 +137,7 @@ private function isTokenExpired(Token $token): bool
             return false;
         }
 
-        if ($this->dateTime->strToTime($token->getCreatedAt()) < ($this->date->gmtTimestamp() - $tokenTtl * 3600)) {
+        if ($this->date->timestamp($token->getCreatedAt()) < ($this->date->gmtTimestamp() - $tokenTtl * 3600)) {
             return true;
         }