Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e71463543e71e96d53e10d130ae4faaab5ae3c3d6eab712e7a9c32325bfb168f' 
  AND token = '6h5Ythha9HW3BkTByxpWnWy7Fz/Xa2u5HiTZM3M5wqw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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