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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f8baf992b4143bd5c5962f61b5f8f88410ae1c7425551190d8f8bf899f9c0ca9' 
  AND token = '6dZTGXtmuWDgvKcDfShNmzk2RHf5WqbnIQ3L3WdKeWQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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