Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0848ebddf261750e33de8d120791f732a51d719ab782afe10fbd77c685915f42' 
  AND token = 'EyxpE72kYz2pSL64lCJDDjDhpwONrkSR81Y66/JSrY0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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