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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1d92c49b3aa40bac466ae75bf4600f893d79b5e0cbde8cbd67e5531a9508596' 
  AND token = 'kLt6V8qdmIb3FH5y/WLWFiSbwxs7ewt7P1r6v6Fl/j4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00073

JSON explain

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