UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'zU4AcHCz+mQnrBr7E66Kp5MqOJEIgWVZitKglVtn2uI=' 
WHERE 
  key_id = '2ac5dfd714fa1a74da52f45081664fad06cc4b89d922b73774f2ab2f11d74873' 
  AND (
    token = 'zU4AcHCz+mQnrBr7E66Kp5MqOJEIgWVZitKglVtn2uI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )