Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d1b3ae1aef0980ca0914befd0d41102b5125185a6706a9c9fd7dd0348d588ec' 
  AND token = 'nkDPXdjnzqMU3kgPn1r2P/a1J39i3m2IyDoDLixY1Ho=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}