UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'VLGat9SnCOFD68jnQMbuhalttWHVphHhfQiP30L1fAU=' 
WHERE 
  key_id = '4af30a2354ac7313a1ff77c276a4fd473906e324a77b842e0d85d2faeefcf691' 
  AND (
    token = 'VLGat9SnCOFD68jnQMbuhalttWHVphHhfQiP30L1fAU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )