Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '458940309bbcb553871f9d8480b906a007c7a4bccd82ba39ee999f8bfe07da7a' 
  AND token = 'YY7mtwuc6hoKjaHQ9rIyl5Z06+XTJMgWC/wnSebuOMU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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