Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2128185f9541d7bc01934f62aed745b9a9be929bd1ddb6ea2f780ae1a32d8036' 
  AND token = 'K7ywCbdb4eTuCgpp164ZHAq0BZiHyC6ccAyuevBrmsM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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