Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64b5b940a24f045e24e976f45ac021fe233c81a45a4050eb3ebdc49d29f393e4' 
  AND token = 'GnUWGrfosXHQoTnbpEgC2bXnJt12oZQiHEUUw2eiAXk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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