Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4f60941d2c6491e0badf1ca473e6582e789b7badf1fd02e5747b32f931dbb1ee' 
  AND token = 'SkQTCjtvVypFSp/m+WaOUcBFlSPi1OizPoAU7RtnecU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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