Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd02e7803778ba9759cf967305aabae2e85fa4cff302c64585e52ea397b234ca9' 
  AND token = 'zjHUmrzIvVf63JQPk9pB498ST/Bq/L8rxZaeA8uzWHw=' 
  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"
    }
  }
}