The cabinet locks can be a bit funny on their RFID reading performance, especially if you are trying to conceal them.
There are definitely some lighter duty magnets, such as this 60KG one
https://www.aliexpress.com/item/32691218025.html
But if that is too much of overkill, drop bolts are also pretty easy to intergrate
https://www.aliexpress.com/item/33003041451.html
The big advantage to using something like these or the solenoid latch shown in the toolbox project linked above is that it can be triggered by the xAC, which has a much more suitable antenna and may be easier to conceal and still get good reads.