Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c593aa0607e093efc54440f90af0ea0debb2b8d4887c77716efe58c5100284a' 
  AND token = 'RUdENN1plEwCW/Y9IzfdEO9RDhXsHjRs/NAsfc30DVw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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