SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60ea8482c75d3a1405de775e44b1e7c17afcd1fd6cc0b6b64a4306e53eed3fea' 
  AND token = 'tceOfAG/1j+sHtxaYRr5SK/G+CqwURdal9+QJEN1XBQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

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