SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'd25436c01323082aeb88a52b16434a27533394d2cc351b6b924b84a913ad62a6' 
  AND token = 'ByZumXvi0STrA8lLth/vLBC4nRerYXpIPBfvuwOkGoY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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