Advice in Career: Unrealistic boss and concerned about termination

I am hoping to get some practical advice and I realize that I’m never completely without fault.

However, here is the situation. I took a position and relocated my whole family for the position a little over a year ago. The position was a huge jump in salary, title, and looked to help improve my resume. About 6 months in, I realized my boss isn’t very supportive, doesn’t offer guidance, and has zero empathy or context when it comes to reviewing kpi’s. (For example, we announce a shut down of a plant to relocate that demand elsewhere in the organization, thus creating scarcity and a huge increase in short term orders. He asks why we are experiencing a shortage and not hitting our metric and doesn’t accept the circumstantial answer.)

About 3 months ago, we got a new CEO who is not buddy-buddy with my boss like the previous CEO. Since then, my boss has set unattainable goals to impress and is essentially throwing a tantrum because we can’t meet them. It appears since I’m the new guy, I’m becoming his scapegoat. I see the writing on the wall and wouldn’t be surprised if termination is imminent over the next few months.

My question is how bad does it look to find another job after only a year+ in the position? Also, if I get fired before I can find another job, how do I explain that in an interview to a future employer? Do I say it wasn’t a fit, say I learned and improved, etc,?

If it helps, my background is in Supply Chain Management. I am currently in charge of procurement, production planning, and replenishment distribution.