SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80be49b6228e5dc8495d5a4d8ec38c5386f7b15d77449fb0f8573ab8ed1e005e' 
  AND token = 'wXCtKZtjeR96oG2BrfqkPlxmNprmG17shF+hRh16Zuo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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