Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f3726dc7a05d73846915106bd97cf113fc424e4b083804debf09e7eed9400b34' 
  AND token = 'nsDNhG7w30GM4IFyMPHIwcgMd2A8O3gXueWZ0ll5Xxw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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