UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'DYYol476xDqsfvAvu9aJ4IWfsXcQRyxRKHdxw7hpYUA=' 
WHERE 
  key_id = '218830629f6b73ca3910c4eb965a2148dd682e85840e1b867419160152893718' 
  AND (
    token = 'DYYol476xDqsfvAvu9aJ4IWfsXcQRyxRKHdxw7hpYUA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )