Sakura Mochi Expiration

I bought Sakura mochi in Arashiyama more than a few days ago. I forgot to eat them and now they are maybe 6 days old, or older. They seem like fresh mochi, but don't smell, and don't look to have mold on them. The package says an expiration date is on the package somewhere, but I dont see one. Does anyone know how long these are safe for at room temp?