Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05c919f1bee5e4c8e34f4ef20371d0fcd430de798a4acb2884d5cf5277d299da' 
  AND token = 'PivHl09GMB8Umh5tGxronomj1QnirXnrTtL2pXSBJNo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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