UPDATE 
  q_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'QUfpvWPrwJgzsu6NjCb8mTSdUaY6cAtZHPJJcqwGWsU=' 
WHERE 
  key_id = '39c6fd2b6694fec5424ef86192407cbf9a46f304a54c7ead2619676e965111e0' 
  AND (
    token = 'QUfpvWPrwJgzsu6NjCb8mTSdUaY6cAtZHPJJcqwGWsU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )