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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '650abc2a7a61c4f7308b57c179a435160337525d725edb1887293e8784b3c208' 
  AND token = '40KrvFY0lPDEOebS9dty4DpmH6Bbgmqa1dW9/xNZR9E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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