Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '87e6a1541935438e50bcf7fc81b61bff7aa0e5eabc7c6325f25d92ebfef98dbc' 
  AND token = 'Sr7jz1rr+icXs495sMAA4o/tPQ5TeQKpwPSsllKmJAc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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