Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3d808e14305b4be36c9afa612d83f680ca6463ef880e42996453b6bc81fb4ab1' 
  AND token = 'XeW/fDd5CPDLQ2gmwtNSBSgK7YeaazUXdJd9qfLFbFU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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