Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00cab9a276e7ba27e916454c914ac31aa159eaceacda5ce9beff31b0b34ffeab' 
  AND token = 'NCHXiVDza4DDrmT0pkI6kxNf0V6yYjE+af9bbVYdPD8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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