Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6738e61825ee0333319ec80ff65fff9c60be1a2c319e1003eb7baf8d789142d8' 
  AND token = 'pbULkcjeLUE1Nu79az5cTVAtthqQm2k2qgv7GFgtF2Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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