Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '836d66dc3949ed6cc9f713761c2e130ff22c6c49f75e503088cfb48569f92ceb' 
  AND token = 'lTwVxVWeVbbQi9GRGI87N7z/1UyWEyp0Hmn3VBzfDes=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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