Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '67da5081799a084211f49c5fb75e626a992c6aa71b54c13266db36fb55c79deb' 
  AND token = 'Z+5IomRtU1kSJxydDukkTVT162pzdJ+VMttbm/6wwTM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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