When Mc. Donald's says it's open at 5am but the doors are locked still at 5 15 am

It's like come on bro, I gotta hurry up and eat then walk the rest of the way to work since I'm on foot. I can't be late . And I need my breakfast .

But for some reason, they been open right when I get off the bus around 5 15 am so... 🤔