Do Token Creatures go to the graveyard?
Yes. Per Comprehensive Rules:


  110.5e A token is subject to anything that affects permanents in general or that affects the token’s card type or subtype. (...)


So the token is put in the graveyard like other creatures. There is one difference, but this doesn't matter for Fresh Meat:


  110.5f A token that’s in a zone other than the battlefield ceases to exist. (...) (Note that if a token changes zones, applicable triggered abilities will trigger before the token ceases to exist.)


It won't be in the graveyard at the time Fresh Meat resolves, but it will still count as a creature put into your graveyard.