Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5ba72e81f0961b0ef3554568a56d4723d78bcf18674b5ad302cf1889c4282b7a' 
  AND token = 'YLNbF5zlfkghJWvPhiELtu4oeyLS63lyCDg7FxnPByc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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