SCOTUS has gone back and forth over the years on whether a punishment must be both cruel and unusual for it to be prohibited. A simple legal reading would be a logical and, meaning yes it must be both cruel and unusual, and since in Mississippi, this is probably the usual, it would be allowed.
Personally, I’m fine with unusual punishments, if they fit the crime. I recall a case where a guy was sentenced to wear a sandwich board with some message on it for a while, which is certainly unusual, but it had relevance to the crime. But nobody should be sentenced to cruelty, as here or in the plantation labor stories we’ve been hearing about recently.