Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fe6619e4376df9a58c98884bb690bad9ae47116433ce6560fa955e56c7b72675' 
  AND token = 'TOEtdp6EntvW5DeppAubiBcI0oOrx2NkXZhE7GpCR+w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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