Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fd17d364b2c92dfdf30c6a0cfdd8a227a0f1d759bb85a8023b4f6e033533447b' 
  AND token = 'DDdiJFQpRa5pW7sQsgNE/kZVSQA5jnD3m+t7iOdmpJA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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