Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0038db6e3cb88be1d2e87fbbf8d75dfb1e78ddbfef895a9bb7f6cd81cb8ee30a' 
  AND token = 'xi4w9414Yx8NzsLdJiJaCD+5AM4mqP86Tnwgrp7AoAw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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