You want a skill reset?

Yeah, mine are still in storage on this char. Haven't touched it since January after I got hacked. However, not sure if they'd actually work or not..

But good news for me, I can finally take her out of Zenith!

Yep, the actual boxes don't expire, but once you try to use them, they just disappear and you get a notice saying it was expired. I tried this recently, like last week.