Alone time as a mom

As much as i love my kids and husband i struggle with getting any sort of alone time. I work from home and keep my kids home with me they are 3 and a new born. Sometimes i just want to take a quick ride alone or to the store alone. As shitty as this sounds my husband anyways invited himself even if it’s quick run to grab a missing ingredient . He just doesn’t get why i would wanna go alone but all of my time is spent with our kids and/or him and sometimes i just want to get in the car with out having to worry about packing snacks getting 2 others ready, car seats, strollers changing diapers etc. just 2 hours outside of my showers or using the restroom which are hardly alone time. I just want 2 hours for just myself once in a blue moon. Is that unreasonable or selfish ?