Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8097fa6a7662d7ec605e2d3d831d15b7688c0c714451c80354353b8a64cf48b1' 
  AND token = 'SqYDVnSoXy2qZklsl7DpeXNEmitHDhFCbpuYS8ljNqI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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