To clean up unused or stale credit cards, I use the “State” and “Lock Date” fields. Currently, State is visible in Cards > Overview, and Lock Date is visible in Cards > Overview > Export (csv). It would be useful to see both in one view (either Overview or Export) so I can sort and filter by both.
Hi Xiao! Thank you for the feedback. I just submitted it to our Product team. 
Will let you keep you posted if there are any updates!
Best,
Charlotte