Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1eeb597e9d1597640e2783b0eedcd70b4bfe9676985ab96cbc5cdfd7e73e3285' 
  AND token = '3e5x29GjsTIw6n8/CjgrR1H1tYX3FMkXUmCaGDy+z9Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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