UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'emH55+CPuAchrkTvUvwlckgDcs80CtNOiBmvxceFifs=' 
WHERE 
  key_id = 'fd592c5099fc5206a87d9a66fdf87298696ac519b126338f8beb734719f86567' 
  AND (
    token = 'emH55+CPuAchrkTvUvwlckgDcs80CtNOiBmvxceFifs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )