Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ae1667bff2afcb460be159528dbbd105bed551b49ee098625caecc04fe787ed' 
  AND token = 'wqZKK404C/rF5F4HTjRazXWWByRaCdX7oKT0RDFdvUc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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