UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'RkIM6hucXnxMiyaAghsUDx75wAVOwHfFpEaq2AOtNVI=' 
WHERE 
  key_id = '68bf4808db92443c2f75106e38ffef168b2831edf3ce45c4fddefbd764b71ec9' 
  AND (
    token = 'RkIM6hucXnxMiyaAghsUDx75wAVOwHfFpEaq2AOtNVI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )