Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e25af9fac54fee5ed1bfbb6a63b074ac56e9c296ba5eddfa48f50b5e0edb7230' 
  AND token = 'MMudy5phYq163wIiAOaotlJxaxji94KBhcUWErKMshg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}