Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '88115de2aeac677ecd115d40a9f58a70d1ed4783a2a30998f48b81c40e207958' 
  AND token = 'hWszwdNZsYDiMG9GIxK6N5TbaUp858y9QkZIzmZz7DE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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