Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa14235a5e1683e5e889cf1b3820e517fb7e77bd01b7363203ebde18d8fefacc' 
  AND token = 'iI+rvTe9B7NDWDoNpUsLCehK+qE3J7ZEZY8p+7dcK6M=' 
  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"
    }
  }
}