Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05550531c917ee7bbb46cfe3bb2620195c7c8963936d908deaaab9ad55d4503b' 
  AND token = 'tw0njfhiRRM3gVlOSHQEtcGiRs3/twEVM+LNtf9ugI4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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