Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1e4d1bc4c0987eae4908494ab7fe60f51fe2c0b47c85ad0fb60574d02c374ff6' 
  AND token = 'wgHxZoGDWVbHD294HqslNPsu240yD2b204fl0daPgm8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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