Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5eafa54b7546195a2330392bfb03114ecd8c2e08ecd72bce5626fb4ac16e2ad3' 
  AND token = '2zzC4v0+mePSzX7oPlScj59TkabK+VuiWAdWhiDHXfo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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