Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2755e9735f47c727c4a258df46a76c5881bbb15f7321cb4b64606c5ff49e18f0' 
  AND token = 'lssmA6MobfCQnbCH4qRisq/OL100/kDX68GK6wS+L1U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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