Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a3edba87bb08ef9282ccdc947e0665f11a1522c601482fa4a065d4ecdd2653b7' 
  AND token = '725wYFgFqP1WpQ5c7UWdvpCje94++dchQkt/t8wqNn0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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