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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4387265cc9a48c152fd246fbdd9a5a28383ea39ca959f471f7544bf527e58331' 
  AND token = '05iZh6AdShHxQXOxHZu9mGl4t+ob9MdX+/olaNWY7cY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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