Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fad39d3d8130c58ab0141db0c927a1b908d76ab4307b8592c780291a692e5220' 
  AND token = 'lyhwTNcAHpX2LMFHj3bLgXsT9ZBW7VAHMNGfmaoR2R8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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