Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd3ed3331b75e348f0b00c8f0d1349a4bc3f539d3d64c9de5fe2c9d645e7b898' 
  AND token = 'LTlh3MPDJGkfYOhW7VzoUiMgdSEbiSVmlacddD/FEac=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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