SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '566591ed72671aae34b9c992ab9a4aafd9eaedd0260d346a395bc64883fad785' 
  AND token = 'MEGIbG3prVgYfXl/nLdqIppNhMSRVTj4KnvEnDU2AWc=' 
  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"
    }
  }
}