Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '952703cc38636916406416674fbbc60d97d4a961b87900c4010c838ced7cd6e4' 
  AND token = 'x5e4Eababrx5TDz5Own+LhVPXi/DkfYKvyeFMNzA+gc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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