Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '509f16a101b6f6b674d209a004564b2a86722f2a4860e2a7632af8de3a2bd460' 
  AND token = 'IYRbQj6pmMKq1/1u3di27A80FtrgY2J++Tf03RNoJGM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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