Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9063feea496e8458fe1f8a65bba1905dd5b09f3b43ce60d9f1e2119683312bfc' 
  AND token = 'mY7F5gHPm1L/JTsdgIFlkkAYb9D1/33Yrmew9WUz3SM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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