Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5ba66c7ef75f72c85ab75dae06280df2e3981eadcbec2fbe21bcc9c2b0d8c36f' 
  AND token = 'tyqV9Kpa9AzJ/41dH43t1gwB1l11lYr9PBz8sjd4N24=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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