Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ab5305803d79f48b0a8b3cc7a48bdf8fcc2959588052278459e2f41d00e2372f' 
  AND token = 'c7j1ICuWXtyxYR0CGPM9QCkkiTwx9lFoRdj2487M9aA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}