Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b8d3959bfed70b68f7e9033affd64ec1aa24c5a76200b367490d878d7e7800f' 
  AND token = 'FgCSWTYAqqvtNcUro7hPGNPHfCJEIXj02V12aiKdjss=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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