Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '500a033377df05343cceb1de6478c6c9d96211bc0efbd43b99ddcf6e9d59767a' 
  AND token = 'oFx798a6zQcl/qVqWMplu7z1Uoq8O/YyEuBRwx1Jgns=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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