SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '06f8069a0dc571894715314cf25b7a61bb54d1dd20ab7bc44c41e1a4e065c2b4' 
  AND token = 'jF9D+h1Bgw6IAqG1hhK2dQLo/mKUQuLZo0+ZFlS0/VU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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