Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eec2ae174193522ee62a67ac8dd524173d9e1d687767d3a581b2d04cdfd1d967' 
  AND token = 'atmCgXeigSDYxM2DfrAYXE+la+jBywTK8ZPUcVVaoxc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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