Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ae4f82c21e70344874d752c6ca4911c2b24c6a1d16f43e7dbf9aec8823555f7' 
  AND token = '86Xc1hrv5UrZ0aj8GKlm/YU8T3RpORs4KlW2qpd2624=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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