No, it is not a usually used Islamic name.
Yes, Saya is not typically considered an Islamic name. It does not have a specific religious significance in Islam.
Carlos translates to Charles.
Carlos Lao's birth name is Carlos Dimitriadis.
Carlos Sotomayor's birth name is Carlos Sotomayor.
Carlos Clarens's birth name is Carlos Figueredo.
Wendy Carlos's birth name is Walter Carlos.
If it is an Islamic name, it's not a terribly common one. More than likely, it is not an Islamic name.
Carlos Kurt's birth name is Jos Carlos Kunstat.
Carlos Lagunas's birth name is Carlos Lagunas Hernandez.
Carlos Latre's birth name is Carlos Latre Ruiz.
Carlos Seidl's birth name is Carlos Alberto Seidl.
Carlos Serrato's birth name is Carlos Humberto Serrato.