Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4bf8f0b8ed4a63fd2a7f23f30b3752194827155e4315848e0b1f0500804f97fc' 
  AND token = 'a824c6hYfjML/Y/OpMJUok9F7xfGfzELcZKpH3ZjQZ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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