UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'z+zshZC2dbedjo2lRf3W9+7B4FPuAEQkU89u/OA8JX0=' 
WHERE 
  key_id = '270de64d20d0d8a2b2a9f2c824d11b799729bb8c5446715f8f40578c0a6c4ae2' 
  AND (
    token = 'z+zshZC2dbedjo2lRf3W9+7B4FPuAEQkU89u/OA8JX0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )