Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '91aee904d110be96f56ce4053c39489ba2aee45f8eaebfe57d64236852c16545' 
  AND token = 'SoTUXGhCM785tj2oPcGtpyfECUCJTIuyPClR8YIGu4M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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