Time frame after lock?

What is the time frame from lock to birthing?

Well, from OVULATION to CLUTCHING is about 30 days +/-
From CLUTCHING to HATCHING is about 60 days +/-
From breeding to ovulation though is varied. Sometimes it's only a few days, but sometimes it can take weeks. Sometimes it requires several successful breedings before the female ovulates.
So once you see the female ovulate, you have another 90 days (more or less) before you'll get to see baby snakes hatching out.
I hope this helps.

I started pairing (and had locks) in November last year. My first clutch was laid on May 5th.

It happens when it happens! ;)

Also because you see a lock (or several of them) does not mean you will have eggs.

Know what to lock for in your breeding journey and most of all be PATIENT