Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e53eca0a29953d05740637b36058c9c524bc92a2aec41970f94c02892f14c19' 
  AND token = 'tSqls9HQR8UPuNgQ9Uvx7BVkNdoJ4vWMEw5NQQW7qRU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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