Expired meaning the deadline to prosecute Trump for this misdemeanor has passed. But go ahead and avoid the gross violation of Trump's due process rights.
If this is true, then the defense should point this out and request those portions of the charges be dismissed. Even if the Judge refuses, the defense should make an issue of this in closing arguments. It seems to me if this is legally supported, it should be a no-brainer. It seems to me that somebody is missing something, here.
I have heard that the prosecution must tie these charges to another crime. This might be why NY election fraud is mentioned so often by the media.