Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60bc27828ccc1cb39e09ba900a202dd1e54496d32e85824e506882be79f676cc' 
  AND token = 'kYG2tKUawKfOKmmoH7nbyjgiWSrLqQLP/9yxrJxpnvM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}