Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8abe59ac08d625111128e2ac6588cf295896a048d2671f7bdc1adce5e4579935' 
  AND token = 'hshPta9f9JpAiOP3hKRevSiYRr8L4O72fuTZcXL1N34=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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