PHP - save the recent 3 viewed cars in DB

I want to save the car id and a timestamp to a DB. But only the last 3 viewed cars.

id  |  timestamp    |       VehicleId
01 |23-09-21 22:53|XIEKFWSH7S5GESQDGS
02 |23-09-21 24:32|GSTRDDHSDE5GHRDSGD
03 |23-09-21 46:17|LDHGUC86SJNB6%HNSH

Check if there is a old timestamp and overwrite would be preferred (if, then else), as it would generate a lot of data.