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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b075341cccaeb052969169fc5a64e542010dcbc26174492ac96677a946a7d0b' 
  AND token = 'fIjKyGf+pfugdNKzwDvYuyftdb9y+H/ZF0brCuLTaFU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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