Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3c773adcaf80bf740892f4fd3e1efa7ce488f80ea96e0785b0c2406e641942b9' 
  AND token = 'gE16E204hjwbzbKjLH4bvf0a2XYqKZ2Zy5uBXte755Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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