Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f606c6961447b1682b3e6177a7b386f4d917ac371b421a82ea9ab76b49302873' 
  AND token = 'WOXBpJVgCUMENJEwptb80FGDeW5LURhSMhg86xC5UrA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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