MyStore411.com is a store directory that has listed locations and hours for 17 years. That kind of longevity is usually a good sign: the site has been around long enough that a scam operation would likely have been shut down or blacklisted by now. The site also has an about page, contact details, and privacy and terms policies, which is more than many simple directories bother with.
But there are two things that give us pause. First, the SSL certificate is invalid, so any connection to the site isn't properly encrypted. That's unusual for a modern website, even one that doesn't collect payments. Second, the site mentions Western Union and MoneyGram, which are often abused in scams. They might be part of a store listing, but you should be careful if the site ever asks you to use those payment methods.
If you're just looking up store hours, the risk is low. But the technical issues and payment flags make it a site you should approach with eyes open — not one you should trust blindly.