UPDATE 
  q_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '51+jAuSuwaDw92WmPdJUELyKleKJsLCiKQs17SQAlpU=' 
WHERE 
  key_id = '2f69e56b41857afcd0e8721abc37a2f1c32aec5935ea59d66f03ac8c945ddfef' 
  AND (
    token = '51+jAuSuwaDw92WmPdJUELyKleKJsLCiKQs17SQAlpU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )