Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '6026f4e4fdc20b12e12c465be9aded9808f1f13affda7fa981362f813f582286' 
  AND token = 'WNeHHsFz37xAIDjVsPuyu1E6+GSU5TvZCmdGcfRxGEc=' 
  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"
    }
  }
}