Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ade87a9024b36b9e2198d4cd30bd83af80070640b4d40102f36476ca4b8fafcd' 
  AND token = 'wG348VGwUgDFShxuhek/viRq+0AVK+ax3E66bLVWu3w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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