Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bdb3bb698ba7ddef8d6ff69d602bce4147ec90844ceab7f8c3fe258742dccc9e' 
  AND token = 'iYCqkW79VcCMUFae8RGZYu7xOUEjVUG2JEiCGD0HYic=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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