Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e1b35cc37c737098088dabd37ef4d941e89ab50d4b2034768a19e49f11b79d7e' 
  AND token = '6AmQvgnQo6sf9w2rg5u8Sw4sp4BoMxTr3R+11oGT/AQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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