Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0777585fe53d56cd3d7476adf4362651ec10a0734f305756cf155e471c139e93' 
  AND token = 'zR5Z0YP2HFMgbMoJ2m78GKUgs21N8g+Yl9PrvRrrZFY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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