Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5387e572709597e27814c92d17d801e3f6eaefe3e3ac5ed1bf12c120d273d360' 
  AND token = 'Sbihg3SmoKlIYLtY3k2TemQKuW9tazaUbnE7prigh9c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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