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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '329d1d595c2d77a713659351cce1b8cda1db9d6c8235fd7bfb6fbbab807479bb' 
  AND token = 'MUXdM/7rPv5BWut8KWXlil2+E6PM0FZ9gdweXRDOK2U=' 
  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"
    }
  }
}