Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'feb8b89ea3839294c75d1fe17464488d8079364e062a8fbabd1b44d7e04e2812' 
  AND token = 'YuX/dRa7GK0tYdgfaaaFgrVZscuIWAjUR52xcCs6uFk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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