Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '115b32cc3c3d6679db46d5aae9a4dad1fab4e6d3b34b918d759e227834bb491d' 
  AND token = 'GiDjptGacXEbr/wqqfORRkit2KgJBHAAQX6m46Wqtz8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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