It is not Spanish but English, it is used to name a young man who is a lover of a mature woman or man, and translates as "toy boy (sexual). See yoghurt, paedophilia.
TOY BOY anglilicism meaning TOY MUCHACHO . o MUCHACHO TO PLAY , is a Spanish television series that aired on Antena 3 and that Netflix introduced in 2020 with great success. .