Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '30195cb3afbf68bf6efe35020646732064ab09cd47d51c615e86ce62a70bce06' 
  AND token = '0chKNtNsubZOnl7QWBUOp25pqIo2Bn5h3xMVnXje7X0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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