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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '4fe82ca9f33bf4f99b8afbfb075576bad94a116c0e42d2bcc103004e615ba960' 
  AND token = 'V2F9X/odQEBKKuq21GzhWO4T2Eh/I3QRQn3halmyyms=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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