I had cryotherapy 30 years ago. Not sure if I had an abnormal Pap smear in the following 5 years. I feel like I may have had an abnormal reading 5 years after the cryotherapy, but I had a second reading and it ended up being normal. So that was about 25 years ago.

I do know that the preceding ten years from today, they were all negative.

This is from Mayo Clinic:
In general, women older than age 65 don’t need Pap testing if their previous tests were negative and they have had three Pap tests, or two combined Pap and HPV tests, in the preceding 10 years. However, there are situations in which a health care provider may recommend continued Pap testing.

Women with a history of cervical cancer or high-grade, abnormal Pap tests over the past 20 years should continue cervical cancer screening.