Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '32a68dc3548a4de1135d12531cf00ae02a1d3252248ba88264af0d208cc89931' 
  AND token = 'GE32DR5qeDNPP36+BsT+fwFV5pVQNVz5leufDzrinik=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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