Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec27525e7e8162164de19e5b089a24c6503b443c272b7478ed51519f2850f0e6' 
  AND token = 'rRNpzc59MSL06Gw035gFrOs6NcJVI6wCumFJ6zHyj5o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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