I read somewhere that a raccoon can't open a carabiner like that. But do you want to do the twist part as well as the carabiner part and the easing the hasp off the loop part every time you go into or out of your coop? Do you plan to carry much in or out? Depending on your set up, it might not be an issue.
I think it would be for me. I'm still building so this is theoretical at this point but I've done a lot of chores for other livestock. I know I want something I can open with my hands full since my feed, water, and nest boxes will be inside. I'm thinking to block raccoons by having two latches - too far apart for one raccoon to reach both at the same time. The plan is homemade sliding bar or pivot latches I can open with an elbow and a foot. I may work in a way to padlock it, too, if only occasionally, if it looks like something is trying to get in.