I usually put my sandwiches in the air fryer at 400 for 5 min or I just microwave for 1 min if I’m in a hurry. The meat is supposed to be “steaming”.
You don't need to cook it at all. As long as you're getting it from a regular place not a corner stand or something, you're fine. You're more likely to get listeria from veggies or salad than deli meat.
I usually do 1-1:30 in the microwave and then 2:30 in the air fryer
I cook mine on the stove get a little browning to it