SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd69dafcec6389a6e7cac21d9ec4eaf813da4509324320051b4d18f16697cbc31' 
  AND token = 'ebFwX1jKklnHeQOJTI0f89FhK1e/8n2kZxqLorWDxFk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

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