SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4bac766144a5198e01f42f4cbaa1e297f23206bbd9b6e6798c129d8ed9564747' 
  AND token = 'VZHZCH65jrSFnDDbhzaLHaYnSpadJHiJCJpeXt/dXI0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Impossible WHERE noticed after reading const tables