Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8a16cbf3887385e605613619fb367c9204ee95e514c62bc6c047a748138786c2' 
  AND token = 'ptUg8BU2+zQIt7J6c1OiHtahEhe6Siosafl76Mh5pB4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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