Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1838d9157164d7d64d871a39d6d3a5089afd842a714bcbd015789dd0abfd2db2' 
  AND token = '65pT7zi72gowBdF0IDw6mV4Rd+d9ZLf29CQ+g9Q7Se8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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