SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '3909cdfe95242cea43c50a76082ae440c9ef6533891f6aa09681efbb274f1e87' 
  AND token = 'CYP/9rl80BTjOGa7vEmyl+VTD5HScuowIZ9j1bAqyQA=' 
  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"
    }
  }
}