I dont know from experience what a burned base looks like, but I would guess that as long as you didn't melt an obvious divot or hole in it? You're fine.
If you didn't leave the iron sitting in one place to melt the base, I dont think you did any damage. (...some folks who know more might know if overall excessive heat might effect the core?)
get weird and paranoid about their first wax job. I know I did.
Relax & enjoy the fast new ride!