Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63c6657d6cc75db257100fed799aefb5e9be072db0daeaaef07db3b5aee63270' 
  AND token = 'OGJLTBdCbalYBYDuuLobqu6tLZzGFcVzB7YxNfCnyDQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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