UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'cV8Pf/h7X2eAqEObhv7aG2WtfLAMt3My5Eil+sjZqBg=' 
WHERE 
  key_id = '4bc8f0fc86c42f119d68c99596138e97c3d71aa9fca99d7ef2ab6c1f0f79a4e5' 
  AND (
    token = 'cV8Pf/h7X2eAqEObhv7aG2WtfLAMt3My5Eil+sjZqBg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )