SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '597c946350ee4733ef8de16a04281d272f6f69695719c91109f1fa248b343d3b' 
  AND token = 'I2/AMQcsBAQQZMrKq+EqF+0e6CX2Tv4VWiUQLLgmMX8=' 
  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"
    }
  }
}