Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3edba3e4e12ae112627505ec1713d428067f443dca47fd53b65d06beb3cd4007' 
  AND token = '0V/s2f4mdFaRUkWO1IfkuHe8R5aD3emhrlhNcDP4UBg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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