Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '20724fa9461b8c8595dddcb71e6eb854ff6b9ccb0af81a507dc7ae79cdeac3d0' 
  AND token = '86KYzna/z8vbltuU6zzaQozRn5dczCT6aoPL9kNdHzU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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