SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '36c475a9fd8e1dfd14b8f4944524f2bd285a299d5e85416233d4cd3750c4399d' 
  AND token = 'ALwMx9t87zcKalSWh1A7QerwTg+pFf5f7GVQrXKwMpY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

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