Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0070ffddc48bb5a0dd3a0c6c6d0ee700acacd7f5fd67e3b75c77b7c22fa40465' 
  AND token = 'G2UQyxfdM6LF8Uptgfhcw1cqXNdiXw0UXorNQRQngQU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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