Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08c5b24f1f7229262f6d71e94f12972100e305da3e67318263fccc0c5a8bff5b' 
  AND token = 'zyIptaqtY48gboSn+yFkwrGpJu3MEM9iluAjr2Vb9b0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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