Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a8fcd3d4866610e6a342960e5c4f1ed3e1e5940df7b5f2aa475b8ff54884711' 
  AND token = 'oYtemYQQ5mqZ01qO1EoFS/d2vp1Y0+XxHqubFI7iA88=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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