UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Dd9ExLFNubxpFi2wo5UT1EHGeK820teQo+3wmb7/rMI=' 
WHERE 
  key_id = '50250bdc8a3897e1b2cae072e8094e8b3b41e9b3548a41a98df27970209822a7' 
  AND (
    token = 'Dd9ExLFNubxpFi2wo5UT1EHGeK820teQo+3wmb7/rMI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )