Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4c3fe6e6ccdbb99103968ba6a3d94485156aa5b31898f06826a31416d4eef9e7' 
  AND token = 'iuc1sK4Npsv6QJayweYgedp9V9GFDFvCS/zpCIZ1TKo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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