Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0078c80c90af50f55e8fb68d0e2fe238ac15b02b28c60555f2476df4e77054d8' 
  AND token = 'Z9C6rT/t7bWe6+3BEW/LYHoueS+fnAJv/SMzvSqy3QI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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