UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '6gJcExtWU2jMAvGNjFY0JLaBRe0/o9iPX/5cZnUQaFM=' 
WHERE 
  key_id = '51f092f08c581cef2850b068892945a441d6c66b914d76f8b4e037d8c6f54a2d' 
  AND (
    token = '6gJcExtWU2jMAvGNjFY0JLaBRe0/o9iPX/5cZnUQaFM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )