Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f467db9b7f2b5743badd6895f13989d83d085c61e00505ca79dee95a3eb9f8e6' 
  AND token = 'sq72tAEIcuyS657IwKHLSnBzS7fyqZvCenwGzEOzF3g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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