Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '129c35d020cbc4c55c8ed367d92620df39c86cff35d8a006e90eba4ec5c97ccb' 
  AND token = 'Ro6/XfkOeZHHq7c8T/DHx+0QoquTwLHok5oE6/wDwn8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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