Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8a220efb18c48c2a4f7236d0ad856e2d4d2225e561187512f88218f076289c0e' 
  AND token = 'pnijNm+WuClf22my75vUh6e05/fd1dx+Pcow4MJ0ouQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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