Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed35c1260f0371130e27fb12e80046f752e165b1dc696621162a19a31a434677' 
  AND token = 'VBibn+qW4fOzgb4KR4xwW6TxWzy5E/81M++kd466wk0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}