SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '384dffacb5a767fba5ad88225e0c14412a94b85c6724b1dff38299353996fe9d' 
  AND token = 'iWn96FLqzpE+JqjMdNJLJ198hyUj8N1xSSIwqAgMkmw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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