Yes it can, I've done it several times. (I'm not sure I've done it since 8.4 came out, but surely they haven't removed the ability?) Hold the phone near the NFC reader, and it automatically wakes up and asks for fingerprint. At the bottom of the screen is my list of non-default cards. I choose one of them and then use Touch ID to complete the transaction on the non-default card. The phone remains locked.
7/19/15 at 5:26pm