Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '46507bbd975f7cf9c49e31758a471126f45074bd12c5e4f9c595d436b05fae5b' 
  AND token = 'GpqN8DrZojuKdaNKT7f2MS5ZqIzQuKderqEWCwMbG44=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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