Display over 10000 rows

Hello, we are create a normal php call like:

$testquery = mysqli_query($db_link, "SELECT * FROM datenpflege_npr");

And than we will display all rows on datatables. Now we get a big issue, if we insert a lot of rows like 15000 than it will take a long time and it will build also a loading error.

Did you had any idea how we could made this call smart , that it will work fast?