Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd73c2d0bff902441cee578225141a6ad2768e2c625cd3b0ad533df3c092d220' 
  AND token = '5YhI6A4/8sdzddgM9K9m9rzlrBuBULId5GTHmZnSYaQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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