Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5986a86c435864ba408f8ad47dfb632ca15c88def7eed23667f508e93bae73fb' 
  AND token = 'pGeL45YLYs9bmcv3Mn7rIovcUoQsPdRxOIRrmiBVBlU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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