Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ed1af761c5021b6e19728281fbf5ac3a0432a94aa16be193c91321835bcf21e' 
  AND token = 'Z2EIv1gfJ200hQ0qN+etkErvcrWG5g5z7lHaU0NDCcA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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