Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '68e76ec8d787f26b429559680960f10c2484b720f53ba52020b4ac98cea7166a' 
  AND token = 'KJ8Q9aLObZ3JuUBMhmFNFe3G99ICwSWwde6yF7OkbE0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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