I have a half loaf of regular store brand wheat bread that is over three years old and has not grown mold or changed appearance. It took over two years to even get hard and stale. For approx. two years, it sat in its original packaging on top of my microwave and looked fresh and felt relatively fresh to the squeeze.
Sometime around two years ago I tossed a half a bag of grocery store flour tortillas up there too. Those fuckers also look the same as purchase day. No grey, no green, no black spots, nothing.

Modern food does not expire, only we do.