Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9037b8570b960b9ef01213be4e2d532b9623e0e54630689b688f8fd33fd4fd62' 
  AND token = 'VKrpCVkDS9MA6U8BdFWRfX15vuA32SMqEJ91WhNkaC0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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