UPDATE 
  q_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '3a6HtYWUDbkpEJLdpIpBPmgO+Dq1a8xLHFCNeX5yedA=' 
WHERE 
  key_id = '2c39c5d9809f178a53b92e1b0d2519003b8ac862320460965616b314c5c190b7' 
  AND (
    token = '3a6HtYWUDbkpEJLdpIpBPmgO+Dq1a8xLHFCNeX5yedA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )