Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c062a715da3039061b6f234fb015c091ef52b3ddf838d7502e2bd4da9dc195b' 
  AND token = 'ulWB32f2yKxnr+6PBRVnUA/Ztw0Cn30GXJ+N443tKCM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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