Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ca1413ed0c81272a414e4cc29b595c7a2b06a75c9a1fe3fe0a587778098c49a9' 
  AND token = 'LTwBXyTb4NFwbL1KhMNQZADtGFO5AqI8rozZu6ONC4o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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