Topic: Hyrule warriors legends wiiu dlc content code.

I was wondering if anyone knew if there was a expiration date on the code that comes in the box? If not had a chance to open the game as I'm away from home at the moment and was worried that it might run out by the time I get round to it, if anyone knows or is willing to check it would be really appreciated
Thanks in advance guys.
I hope everyone is doing good and happy gaming:)