Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62fdfeab84d80c779d31f2e4d7bbe451d215a8cac4a3bf0ec1f4c45f69c4e422' 
  AND token = 'Lm+QFwlM31B3a6tI2L+5JZk+2bGONQI7lfqxuMp2SEU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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