Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '660a5431f3154868daf2e144adcbb2fc125bfeba421d9c00dbc867f820afe909' 
  AND token = 'hX7VVOFTuMp8FxBlMZ3Ran4cdxL7BPxilYei6l3LrRo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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