Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c10a902ffc4fa64367718ffa3c247b7f9370bdebf3e6da16f8fc85e3d17ba72' 
  AND token = 'PvOys3tWDxu7o95uv6oY3HiXnQidI86LLRSS/Y7dpP0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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