Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a1fd8d9eb21be6f57edfed5ef3456a04190e72c946297581336672f5f371f934' 
  AND token = 'aDnoMYcY5W2YLqG/45FxeMDZxc5FxRinzAU1G6hEixQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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