Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6c06c10fae92c30c7a5c659bc69582e8aa95ee656b5f0fd33e619d2c5f23f3d0' 
  AND token = 'yGyQLgJ82lca9iFqFEYaJixnqlAgB4CSgnEr48oSzIE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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