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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f1cc0cb04a69e072ad824779446fa578437755065384e69c10867a144428fb8c' 
  AND token = '5B1sc7b7tzWx9Kquf+v6r74P+ODGWmKeSBcgCB5+7+E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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