Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '508c93e6a8618210b8926fbffa7c413a517d0a51965cec2f85688af91eb8f058' 
  AND token = 'rHBzoCfcE8frGqXcf56KOk0OwzjXNDX4m/kOcT6kaDQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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