UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'k3ADcGXPOVjN7dX22gb+PozbSiWhq3rueUwnlTkkPfI=' 
WHERE 
  key_id = '81b38bf0105ac4d49a4259b99b975fcd806a864207ae6390c561f214510a4730' 
  AND (
    token = 'k3ADcGXPOVjN7dX22gb+PozbSiWhq3rueUwnlTkkPfI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )