UPDATE 
  tmall_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'W0NHhuUKjYEhQsRO2vTu2sAP3TjckiJfsiuCTrLbnYA=' 
WHERE 
  key_id = '6847e8d467555abae5d217c60c26f662c2614a4910d7a660b75185b0a1041fcd' 
  AND (
    token = 'W0NHhuUKjYEhQsRO2vTu2sAP3TjckiJfsiuCTrLbnYA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )