Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72418c695ac45fa81dcf64501ed42dde0318e16b3bc928b7d10a827a656cbb72' 
  AND token = 'Ys5JsRIHBG9+f9iFBPpA7AjS8FS++QyU5T0h79cnkAU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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