Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9adca5e4190b53b1dad7c377149cc2ea7c6765d317c44d619f3026b5e5488f24' 
  AND token = '1AoI9hSvLIX1G5U+cUxdylhNEifG+NnW8W3M+S3wvzs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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