Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2adc806e8d6a478f0bd1b996ccb7ca18030762e433f83113570f80a4a90c3786' 
  AND token = 'aGktVWkGhruF/OnFkp//f+9OE5GQ/COygw2BGK7gkZg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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