Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f0f4891bc04572b6821afeef7a943e145aad6191044e4d1c6f2ddfd2be80a1fe' 
  AND token = 'HTml/pkzVC1EE+ntW5XygUGKpAD+5DhuKHJyWv2T6OA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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