Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '977b8089aa47aaa960c941619a545acf1d9a46ce7a6d7e4f7772306fde9dabf3' 
  AND token = '7BesmIdEmRqPkt94+3tKlOowvKvPShOjFa5scZA+hYI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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