Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'bf6299104104ff75cd4f41e0cb60447f850ccde4c89492208e133e2cd0cfbe06' 
  AND token = 'L3FZIiIG07JbYI/2lO/0TkjKqx3u8scjeGaOovzBX08=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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