UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'tlHWgtUrqcFZDYoTU61kp5ZO8NtPWEznhTL44Td3vb4=' 
WHERE 
  key_id = '81b7a10638032ae45e2a224174cbbfb2038d04ced6c6d988157997563a558c38' 
  AND (
    token = 'tlHWgtUrqcFZDYoTU61kp5ZO8NtPWEznhTL44Td3vb4=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )