Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '36286c92b660a56815545de6d48a078ca6cf1aa87c1651d3745a4f17d55c96e4' 
  AND token = 'MpiXy1lSQor1hgLAmYapmSHUGjroIc7BjkC+E3vlCWw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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