SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'e2e2f9d7c327366d96171065d949d99bfd233f6e81149dd61a65b05ebca8f4ef' 
  AND token = 'wjUu35Wwuv3zKCw1+Rr9sZ/xqYTYREI6MSSMZUDBCIg=' 
  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"
    }
  }
}