UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '6AcS89IGnfkuYECZlFjFXW3IbNQaVeroxxsBne0mwu8=' 
WHERE 
  key_id = 'ed6c6b6062c58d395f026544ef1891e941d5a79e4ac5c0e7455100864d094def' 
  AND (
    token = '6AcS89IGnfkuYECZlFjFXW3IbNQaVeroxxsBne0mwu8=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )