As seen in selector's documentation, you can control the disabling of the checkbox for a particular row by providing a disabled
function in the column definition for the selector column. The function receives the full item for the row, so you can base the condition on whatever data within the item you need to.
selector({
// other properties e.g. field/label here...
disabled: function (item) {
return item.someField === "someData";
}
})