Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '39e09ad25dd59bd7afaef4796282dfad434ab122ae9072beaa7f1c930d08dea4' 
  AND token = 'RUsA1poVoYREBz2IhueHnSVYg99QrMv0uzM5vcZ/3/0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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