I've been in your shoes. From what I've noticed, my snakes have never been too far away from where they went missing; however, they can hide like nobody's business. You'll look a hundred times in the same spots and won't detect your snake. They are nocturnal creatures, so your best chance of recovery will be when it's dark and quiet. In both circumstances, it took a week and a half for my babies to show up.
As hard as it may be to do so, try not to panic. I thought my poor Loki who got lost in the car was done for because of the extremes in heat and cold. He disappeared four days before I had to fly and I hadn't been able to retrieve him from the car by the time of my travel. I spotted him in the trunk before the little butt went back to a spot I couldn't reach. I left a dish of water for him and thankfully a couple of days after my return, he came out for water. Good thing too because I didn't have much hair to rip out. He didn't suffer any ill effects and I'm so grateful.![]()