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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'f20da93516d5d6ec8555a9215554eda6cc9071b86d10677c4894836cdd518cd1' 
  AND token = '5I9PY95jcOkwXv/hBHeeXX7P1e4dO+e+CYdYXVXtvug=' 
  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"
    }
  }
}