Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d85b10f0baeb79ab848295008e5a0403d161498302f08bb44d64b586845d483' 
  AND token = 'hPWhyZYO2YkC7epZy87io0JC9RAC2oab1YfIjxGOvow=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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