If someone has my PC logged in, they can just use my Google Pay?

I was trying to understand how to secure my Google Pay better. I don't have Chrome filling in card details automatically. However, I noticed that on websites that allow Google Pay, if I just select that payment option and pay, the payment goes through without asking any password, 2FA, phone app authorization or any permission.

This means that anyone with access to my Computer can use google pay without any barrier to order stuff for them.

Is there any fix?