Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1ad95f2e682326abc204b332bde971f1b106369f42c292fdac8cfa338015b630' 
  AND token = 'BU8UX7MKGL16rSz0nF0lEXly051JQs1bUsw4TX3kWUs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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