SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f792bcdc549fe5e8775dd90a3150a38068e51c542ee35aa464684c504c403f90' 
  AND token = 'zWFoVtq4Rkph2I4lrAKdam5ZqAojYuQzxwx7SgJOAw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

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