UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'vkN9sm8M/gjpwp+97YIQhTEGRPTtZ6m94dZtZCXAP34=' 
WHERE 
  key_id = '8d4cb1d3f7239cbd5fc35993d8eba71b946a15849e9c14f35f2485282e905d7b' 
  AND (
    token = 'vkN9sm8M/gjpwp+97YIQhTEGRPTtZ6m94dZtZCXAP34=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )