Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06566ab9c961ddadbb4ee3bae419a2dd3bcb115bce5dfec02e9aeb9a172b8b96' 
  AND token = 'dyCC4++xpbF2x22qyY82ZpbSevwUwErqmecCzvsgj1o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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