Can an unchipped honda accord car key unlock a door?

I want to get a third key made just to unlock the doors and leave my regular key locked in the glove box.

Is this really a question? Yes, you can unlock your car door without the button. Just put the key in the little hold and turn it.

Just go to any hardware store and have the key made.

Wouldn't it make sense to just carry the regular key with you?

No chip is a door only key. The chip is needed to start the car.