SPARQL to check if a specific URI exists

[Laurent Rucquoy]

Hello,

I want to write a SPARQL query to attest the existence of a specific URI in
a TDB.

Is the following query the right way to do this (considering notably the
execution performances with big volumes) ?

ASK WHERE {
    <my-specific-URI> ?p ?o .
}

Thank you in advance for your help,

Laurent