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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '877dfdf2052ec6e22975f97c232eb80bc2812810dc8cdbd24289181d61bc7bcb' 
  AND token = 'tNmik5q6Kxw2J225RqBTZqTr0t8EwjDP9hFXOGgDY8Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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