Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3562138d8f638b40ced6680b1a9beb67d92615536ce91588caaa7570cf7cfce2' 
  AND token = '+ryDkpjDBPyR6UTq9QXXoB9cJTZaWmiYOt+rYnJq0do=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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