Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '143a66da95a69a68d474fd6e6367afa71f69044ea425e612ea38ad196b36e931' 
  AND token = 'qPxhtNN3Bq9fALS3HtXNitV5Mt3k4ZM/yN74JvDD8iQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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