Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '86ea07b224e31db077304ebac787c89103e1efc00886d77560979f05ef1ff953' 
  AND token = 'RHL1PqJW1cpcCFwgIqAFItpBcFmBOLFUFomzMIKfXjk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00076

JSON explain

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