Where did you read that it's recent?

The historian Benzion Netanyahu (father of the current Israeli prime minister) had as one of the main positions that he took in his stuff (such as The Origins of the Inquisition in Fifteenth Century Spain) that it is older and became the main form of anti-Semitism in the Early Modern era. The fact that a well-known (though much of his fame comes from family ties, he did hold a chair at a prestigious university, specifically Cornell) historian argued otherwise suggests that it is by no means unanimous.

Do you have access to the original source of Luther’s quote? While I do not doubt that Luther was capable of racially anti-Semitic statements, this particular quote seems to stem from number 1795 of his "table talks", which were not written down by Luther himself but in this case by Johann Schlaginhaufen (D. Martin Luthers Werke Weimarer Ausgabe TR 2: Tischreden aus den dreißiger Jahren [Nr. 1232–1889]). Their status as primary sources is therefore debatable. Nevertheless, your question is of course still justified.

Edit: Grammar