Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bae559b0a516fcccae615c19a167b51bde69e5ac2b89e6b5302058ad88c45902' 
  AND token = 'h+C9R1zzuw4qmCuz6yU5XN76yW+g4dHxxu764XaNCzM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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