Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c9bb9d44c059b94af152750cc28125347df030dc19eba61ad89f39ec4197ebdf' 
  AND token = 'Kj7jS0SoTZdeM1o6Ca3L62tomAs/brRmC37/GilOjgg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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