SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '1f2825647c99ec08eee9e2e527c458550a98b0746f781325e2ab2e34d801a32a' 
  AND token = 'lfx/mZ3nqUzzmEvAQmu/hC9SzN0dqzHjRF7fsbmXs7Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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