Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a37b0b192ab7ef03746b8411240b75f80d3a01cd8c009b18b208f3e040a8eb30' 
  AND token = 'fqoLhi8qRYkTKm4jIP2tTXonPVMDx+EmSs0ld/7+f9o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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